Woocommerce, WP e-commerce, or shopp?

My wife has decided to start her very own Cupcake business and I recommended wordpress to manage the website. I am the taste tester and website admin, yay!

Here is a list of what I am looking for…

1.I would like to allow the guest of our website to select a flavor of batter, flavor of Icing/Frosting, and the color of the paper cup it is baked in.

2. I would like to have an image displayed of the combination they selected.

3. I would also like to give the guest the opportunity to add a filling, add a topper (piece of chocolate molded into a design), and if they would like the cupcake to be dairy free and/or sugar free.

I have installed and played around with a few e-commerce/store plugins and due to variants and add-ons being a huge factor, I have narrowed the options to WooCommerce, WP E-commerce, and Shopp.

All of them have the ability to add variants and “add-ons”. Looks like Woocommerce wants $50 for the “add-on” feature. If Woocommerce this is the best option, $50 is worth it. I added a few variants and when I tested it out and went to pick a combination. If I pick the batter and hesitate for a few seconds before I choose the icing/frosting it “freezes” and says this “product combination does not exist” (or something to that effect) and by freezes I mean it does not allow me to click the drop downs anymore.

I noticed WP E-commerce has an image for each variant (yay) but when I test it out and pick a combination of variants that I had uploaded an image, the image does not display. Only when checking out, so I see the image in the list of items in my cart. Why does the image not show when the combination was selected?

I tried Shopp as well – it works, looks ok, but doesn’t have images for the variants?

So, based one what I am looking to do with an e-commerce plugin and what I have discovered so far, what plugin should I proceed with and how can I go about solving whatever issue i am running into?

Thanks a bazillion!